ref: c7b8a9f86b3e6aecc69448a6aa724938a57c9de2
dir: /lib/c/stdlib/malloc.h/
#include <stdlib.h> /* minimum amount of required units */ #define NALLOC 10000 typedef union header Header; union header { struct hdr { Header *next; size_t size; } h; /* most restrictive type fixes the union size for alignment */ _ALIGNTYPE most; }; extern void *_prevchunk(Header *hp);